Time in IDLW and CST
The time difference between International Date Line West Time (IDLW) and China Standard Time (CST) is 20 hours. China Standard Time is 20 hours ahead of International Date Line West Time.
This means 9am IDLW is 5am CST (next day) and 5pm IDLW is 1pm CST (next day).
International Date Line West Time
- The current local time in IDLW is 12:38 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
China Standard Time
- The current local time in CST is 8:38 pm (July 18, 2026)
- CST time zone offset is UTC+08:00
How to convert International Date Line West Time to China Standard Time?
Add 20 hours to International Date Line West Time to get China Standard Time.
Time in IDLW
00:00
Time in CST
00:00
Use the slider above to convert International Date Line West Time to China Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| IDLW | CST |
|---|---|
| 12am | 8pm |
| 1am | 9pm |
| 2am | 10pm |
| 3am | 11pm |
| 4am | 12am |
| 5am | 1am |
| 6am | 2am |
| 7am | 3am |
| 8am | 4am |
| 9am | 5am |
| 10am | 6am |
| 11am | 7am |
| 12pm | 8am |
| 1pm | 9am |
| 2pm | 10am |
| 3pm | 11am |
| 4pm | 12pm |
| 5pm | 1pm |
| 6pm | 2pm |
| 7pm | 3pm |
| 8pm | 4pm |
| 9pm | 5pm |
| 10pm | 6pm |
| 11pm | 7pm |